My girl friend won't tell her parents about me ?

Ok me and my girlfriend have been dating about 8 months we love eachother so much she is 15 I'm 16 and I can drive now the problem is we can never see eachother because she is to scared to ask her dad if she can see me or she is scared he will find out if we secretly see eachother I want to see her so bad but I can't I asked her why she won't tell her dad and she said he doesn't like the thought of her and boys and hel say no but she has never asked him once to see me iv asked her to go many places with me and it's always a no I fear she is embarrassed of me but idk what should I do or say to her? I have also offered to meet her father but she always says no